Highcharts up to 11.4.8/12.6.0/13.0.x Credits cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, was found in Highcharts up to 11.4.8/12.6.0/13.0.x. This affects an unknown function of the component Credits. Such manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-118251. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Highcharts up to 11.4.8/12.6.0/13.0.x. Affected by this issue is some unknown functionality of the component Credits. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

Highcharts JS is a JavaScript charting library based on SVG. Prior to 11.4.9, 12.6.1, and 13.1.0, Highcharts assigns credits.href to the window location when the credits label is clicked without checking the URL against the allowed-scheme list. An attacker who controls chart configuration can provide a javascript URL and run script in the origin of the hosting page when a user clicks the credits label. Highcharts Stock, Maps, and Gantt are included because they ship from the same package. This issue is fixed in 11.4.9, 12.6.1 and 13.1.0.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-118251 since 10/27/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 11.4.9, 12.6.1 or 13.1.0 eliminates this vulnerability.

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Productinfo

Name

• Highcharts

Version

• 11.4.0
• 11.4.1
• 11.4.2
• 11.4.3
• 11.4.4
• 11.4.5
• 11.4.6
• 11.4.7
• 11.4.8
• 12.0
• 12.1
• 12.2
• 12.3
• 12.4
• 12.5
• 12.6.0
• 13.0

Website

• Product: https://github.com/highcharts/highcharts/

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